feat(bigquery-jdbc): implement clearcut transport layer

[Neenu1995]

No description provided.

[gemini-code-assist]

Code Review

This pull request introduces the ClearcutTransport class and its corresponding unit tests to handle uploading telemetry payloads to Clearcut. The review feedback highlights critical issues in the retry loop implementation, such as dead code from default exception throwing on non-2xx status codes, immediate retries without backoff, and unnecessary retries on non-retryable client errors (e.g., 400 Bad Request). The reviewer recommends explicitly disabling exception throwing on execute errors, using try-with-resources for response cleanup, restricting retries to 429 and 5xx status codes with proper backoff, and adding a unit test to verify that non-retryable errors do not trigger retries.